{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6250-2AB32","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6250-2AB32","canonicalUrl":"https://aoctrl.com/siemens/3RA6250-2AB32","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6250-2AB32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA6250-2AB32 compact reversing starter, 53 kA at 400 V, CLASS 10/20 adjustable trip class, 24 V AC/DC coil, spring-loaded terminals, 90 x 191 x 165 mm, DIN rail.","salesMarkdown":"## Reversing starter with 53 kA SCCR at 400 V The Siemens 3RA6250-2AB32 is a SIRIUS compact reversing starter — a single device that handles forward/reverse motor control in one DIN-rail footprint. It's rated for continuous operation per IEC 60947-6-2, meaning it's built for sustained duty on conveyors, pumps, or fans where direction reversal is part of the cycle. The headline number here is 53 kA at 400 V — that's the rated short-circuit breaking capacity. That's a high interrupting rating for a compact reversing starter, so it can sit downstream of a transformer or a high-capacity bus without requiring a current-limiting fuse ahead of it. ## Trip class and control voltage — what they mean for the line Trip class is adjustable between CLASS 10 and CLASS 20. CLASS 10 trips in under 10 seconds at 7.2× FLA — that's the standard for motor protection on pumps and fans where the start-up is quick. Having both in one starter means you don't swap overload relays when the load changes; you dial it in. This is a standard control voltage in industrial panels, so it drops into an existing 24 VDC control bus or a 24 VAC transformer circuit without a separate power supply. The coil draws 2.8 W AC maximum and 2.9 W DC maximum — low enough that a 24 VDC power supply rated for a few amps can run a bank of these starters. Spring-clamp terminations are faster to wire than screw terminals and hold better under vibration — a real advantage on a reversing starter that sees frequent switching cycles. ## Panel fit and environmental tolerance The 3RA6250-2AB32 measures 90 mm wide, 191 mm high, and 165 mm deep. It mounts on a standard DIN rail via screw and snap-on fastening — the snap-on locks it in place, the screw secures it for high-vibration environments. Mounting position is any, so it fits tight enclosures where you need to orient it sideways or upside-down. That covers most indoor industrial environments and unheated warehouses. Vibration resistance is spec'd at 4 to 5.8 Hz with 15 mm amplitude, and 5.8 to 500 Hz at 20 m/s² for 10 cycles — it's rated for machine-mounted applications like conveyor drives or compressor skids. Shock resistance is 60 m/s² (6g) for 10 ms, three shocks per axis. Degree of pollution 3 means it's rated for conductive pollution environments — typical in factory floors where dust, oil mist, or humidity are present. The three LEDs on the front give visual status indication for the control circuit, which helps during commissioning and fault-finding without needing a multimeter. No official successor or cross-reference is listed — the 3RA6250-2AB32 is the active version in the SIRIUS compact starter family. If you're replacing an older reversing starter in a panel, the 90 mm width and DIN-rail mount make it a drop-in for most standard layouts, but confirm the control voltage (24 V AC/DC) and the spring-clamp termination style against your existing wiring.","metaTitle":"Siemens 3RA6250-2AB32 SIRIUS Reversing Starter","metaDescription":"Siemens 3RA6250-2AB32 SIRIUS compact reversing starter. 53 kA breaking capacity at 400 V, CLASS 10/20 adjustable trip, 24 V AC/DC coil.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"165 mm","Solid":"2x (0.25 ... 1.5 mm²)","Width":"90 mm","at DC":"24 ... 24 V","title":"3RA6250-2AB32","Height":"191 mm","at 400 V":"53 kA","at 50 Hz":"24 ... 24 V","at 60 Hz":"24 V","Trip Class":"CLASS 10 and 20 adjustable","Recommended":"vertical, on horizontal standard DIN rail","description":"SIRIUS Compact load feeder Reversing starter 690 V 24 V AC/DC 50...60 Hz 0.1...0.4 A IP20 Connection main circuit: Spring-type terminal Connection control circuit: Spring-type terminal","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","at AC maximum":"2.8 W","at DC maximum":"2.9 W","During Storage":"-55 ... +80 °C","number of LEDs":"3","Type Of Voltage":"AC/DC","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"screw and snap-on mounting","IO-Link protocol":"No","Shock Resistance":"a=60 m/s2 (6g) with 10 ms per 3 shocks in all axes","Mounting Position":"any","at DC rated value":"24 V","Product Brand Name":"SIRIUS","Type Of Assignment":"continous operation according to IEC 60947-6-2","Degree Of Pollution":"3","Product Designation":"compact starter","Vibration Resistance":"f= 4 ... 5.8 Hz, d= 15 mm; f= 5.8 ... 500 Hz, a= 20 m/s²; 10 cycles","at 400 V rated value":"90 W","at 480 V rated value":"0.4 A","at 50 Hz rated value":"24 V","at 500 V rated value":"3 kA","at 60 Hz rated value":"24 V","at 600 V rated value":"0.4 A","at 690 V rated value":"3 kA","AS-Interface protocol":"No","Design Of The Product":"reversing starter","For Main Current Circuit":"spring-loaded terminals","at AC at 400 V rated value":"0.4 A","NO-Load Switching Frequency":"3 600 1/h","Of The Main Contacts Typical":"10 000 000","at AC in hot operating state":"0.01 W","at AC-3 at 400 V rated value":"0.09 kW","Of Auxiliary Contacts Typical":"10 000 000","Substance Prohibitance (Date)":"05/01/2012","Insulation Voltage Rated Value":"690 V","at DC-13 at 6 A at 24 V typical":"30 000","at AC-15 at 6 A at 230 V typical":"200 000","degree of protection NEMA rating":"other","For Auxiliary And Control Circuit":"spring-loaded terminals","Of The Signaling Contacts Typical":"10 000 000","Between Main And Auxiliary Circuit":"400 V","Design Of Short-Circuit Protection":"electromagnetic","Product Extension Auxiliary Switch":"Yes","Product Function Bus Communication":"No","Relative Humidity During Operation":"10 ... 90 %","Without Load Current Share Typical":"2.9 W","Surge Voltage Resistance Rated Value":"6 000 V","at AWG cables for auxiliary contacts":"2x (24 ... 16)","Between Control And Auxiliary Circuit":"300 V","at AC in hot operating state per pole":"0.01 W","Between Auxiliary And Auxiliary Circuit":"250 V","due to burst according to IEC 61000-4-4":"4 kV main contacts, 2 kV auxiliary contacts","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Formula For Making Capacity Limit Current":"120 x Ie","Product Function Short Circuit Protection":"Yes","Supply voltage required Auxiliary voltage":"No","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.25 ... 1.5 mm²)","Formula For Limit Current Breaking Capacity":"100 x Ie","at AC-41 according to IEC 60947-6-2 maximum":"750 1/h","at AC-43 according to IEC 60947-6-2 maximum":"250 1/h","with high demand rate according to SN 31920":"50 %","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"2","operating voltage at AC-3 rated value maximum":"690 V","electrostatic discharge according to IEC 61000-4-2":"8 kV","contact rating of auxiliary contacts according to UL":"contacts 21-22, 13-14, 43-44 Q600 / A600, contacts 77-78 R300 / B300, contacts 95-96-98 R300 / D300","Product Component Removable Terminal For Main Circuit":"Yes","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","product function control circuit interface with IO link":"No","conducted HF interference emissions according to CISPR11":"150 kHz ... 30 MHz Class A","field-bound HF interference emission according to CISPR11":"30 ... 1000 MHz Class A","operational current of auxiliary contacts at AC-12 maximum":"10 A","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","Product Function Control Circuit Interface To Parallel Wiring":"Yes","Product Component Removable Terminal For Auxiliary And Control Circuit":"Yes","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"0.1 ... 0.4 A","number of NO contacts of instantaneous short-circuit trip unit for signaling contact":"1","For Short-Circuit Protection Of The Signaling Switch Of The Overload Release Required":"4A gL/gG/400V","number of CO contacts of the current-dependent overload release for signaling contact":"1","For Short-Circuit Protection Of The Signaling Switch Of The Short-Circuit Release Required":"6A gL/gG/400V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$417.83","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bc36e82c1ac2d3e3ecf8af1b0989a79d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=20186&mlfb=3RA6250-2AB32"},"ai":{"faq":[{"question":"What is the breaking capacity of the 3RA6250-2AB32?","answer":"The rated short-circuit breaking capacity is 53 kA at 400 V."},{"question":"What trip classes does the 3RA6250-2AB32 support?","answer":"The trip class is adjustable between CLASS 10 and CLASS 20. CLASS 20 allows up to 20 seconds for high-inertia loads like centrifuges. The adjustment is on the device itself, so you can change it without swapping the overload relay."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6250-2AB32","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RA6250-2AB32 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}